b5a273a1cf
Polly currently uses `getDebugLoc` in a few places to produce diagnostic output; this is correct when interacting with specific instructions, but may be incorrect when dealing with instruction ranges if debug intrinsics are included. As a general rule, the debug locations attached to debug intrinsics may be misleading compared to the surrounding instructions, and are not generally used for anything other than determining variable scope info; the recommended approach is therefore to use `getStableDebugLoc` instead, which skips over debug intrinsics. This is necessary to fix test failures that occur when enabling non-instruction debug info, which removes debug intrinsics from basic blocks and thus alters the diagnostic output of Polly (despite causing no functional change).
116 lines
6.2 KiB
LLVM
116 lines
6.2 KiB
LLVM
; RUN: opt %loadPolly \
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; RUN: -pass-remarks-missed="polly-detect" -polly-detect-track-failures \
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; RUN: -polly-allow-nonaffine-loops=false -polly-print-detect -disable-output \
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; RUN: < %s 2>&1| FileCheck %s --check-prefix=REJECTNONAFFINELOOPS
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; RUN: opt %loadPolly \
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; RUN: -pass-remarks-missed="polly-detect" -polly-detect-track-failures \
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; RUN: -polly-allow-nonaffine-loops=true -polly-print-detect -disable-output \
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; RUN: < %s 2>&1| FileCheck %s --check-prefix=ALLOWNONAFFINELOOPS
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; RUN: opt %loadPolly -pass-remarks-missed="polly-detect" \
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; RUN: -polly-process-unprofitable=false \
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; RUN: -polly-detect-track-failures -polly-allow-nonaffine-loops=true \
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; RUN: -polly-allow-nonaffine -polly-print-detect -disable-output < %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=ALLOWNONAFFINEALL
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; void f(int A[], int n) {
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; for (int i = 0; i < A[n+i]; i++)
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; A[i] = 0;
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; }
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; If we reject non-affine loops the non-affine loop bound will be reported:
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;
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; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:2:8: The following errors keep this region from being a Scop.
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; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:2:8: Failed to derive an affine function from the loop bounds.
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; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
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; If we allow non-affine loops the non-affine access will be reported:
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;
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; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:2:8: The following errors keep this region from being a Scop.
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; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: The array subscript of "A" is not affine
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; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
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; If we allow non-affine loops and non-affine accesses the region will be reported as not profitable:
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;
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; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:2:8: The following errors keep this region from being a Scop.
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; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:2:8: No profitable polyhedral optimization found
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; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @f(ptr %A, i32 %n) !dbg !4 {
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entry:
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br label %entry.split
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entry.split: ; preds = %entry
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tail call void @llvm.dbg.value(metadata ptr %A, i64 0, metadata !13, metadata !DIExpression()), !dbg !14
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tail call void @llvm.dbg.value(metadata ptr %A, i64 0, metadata !13, metadata !DIExpression()), !dbg !14
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tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !15, metadata !DIExpression()), !dbg !16
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tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !18, metadata !DIExpression()), !dbg !20
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%idxprom = sext i32 %n to i64, !dbg !21
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%arrayidx = getelementptr inbounds i32, ptr %A, i64 %idxprom, !dbg !21
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%0 = load i32, ptr %arrayidx, align 4, !dbg !21
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%cmp3 = icmp sgt i32 %0, 0, !dbg !21
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br i1 %cmp3, label %for.body.lr.ph, label %for.end, !dbg !21
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for.body.lr.ph: ; preds = %entry.split
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br label %for.body, !dbg !22
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for.body: ; preds = %for.body.lr.ph, %for.body
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%indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ]
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%arrayidx2 = getelementptr i32, ptr %A, i64 %indvar, !dbg !24
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%1 = add i64 %indvar, 1, !dbg !24
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%inc = trunc i64 %1 to i32, !dbg !21
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store i32 0, ptr %arrayidx2, align 4, !dbg !24
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tail call void @llvm.dbg.value(metadata !{null}, i64 0, metadata !18, metadata !DIExpression()), !dbg !20
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%arrayidx3 = getelementptr inbounds i32, ptr %arrayidx, i64 %indvar, !dbg !21
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%2 = load i32, ptr %arrayidx3, align 4, !dbg !21
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%cmp = icmp slt i32 %inc, %2, !dbg !21
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%indvar.next = add i64 %indvar, 1, !dbg !21
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br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !dbg !21
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for.cond.for.end_crit_edge: ; preds = %for.body
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br label %for.end, !dbg !25
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for.end: ; preds = %for.cond.for.end_crit_edge, %entry.split
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ret void, !dbg !27
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!10, !11}
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!llvm.ident = !{!12}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "ReportLoopBound-01.c", directory: "test/ScopDetectionDiagnostic/")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
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!5 = !DIFile(filename: "ReportLoopBound-01.c", directory: "test/ScopDetectionDiagnostic/")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8, !9}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!12 = !{!"clang version 3.6.0 "}
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!13 = !DILocalVariable(name: "A", line: 1, arg: 1, scope: !4, file: !5, type: !8)
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!14 = !DILocation(line: 1, column: 12, scope: !4)
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!15 = !DILocalVariable(name: "n", line: 1, arg: 2, scope: !4, file: !5, type: !9)
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!16 = !DILocation(line: 1, column: 21, scope: !4)
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!17 = !{i32 0}
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!18 = !DILocalVariable(name: "i", line: 2, scope: !19, file: !5, type: !9)
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!19 = distinct !DILexicalBlock(line: 2, column: 3, file: !1, scope: !4)
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!20 = !DILocation(line: 2, column: 12, scope: !19)
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!21 = !DILocation(line: 2, column: 8, scope: !19)
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!22 = !DILocation(line: 2, column: 8, scope: !23)
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!23 = distinct !DILexicalBlock(line: 2, column: 8, file: !1, scope: !19)
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!24 = !DILocation(line: 3, column: 5, scope: !19)
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!25 = !DILocation(line: 2, column: 8, scope: !26)
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!26 = distinct !DILexicalBlock(line: 2, column: 8, file: !1, scope: !19)
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!27 = !DILocation(line: 4, column: 1, scope: !4)
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